M20.019 — Mallet finger of unspecified finger(s)
Is M20.019 billable?
Yes, but M20.019 is an unspecified code. M20.019 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, M20.019 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting M20.019 — the more specific alternatives are listed below.
More specific alternatives
M20.019 at a glance
| Code | M20.019 |
|---|---|
| Description | Mallet finger of unspecified finger(s) |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does M20.019 group to?
M20.019 sits in MDC 08 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 564Other Musculoskeletal System and Connective Tissue Diagnoses with MCCmedical
- 565Other Musculoskeletal System and Connective Tissue Diagnoses with CCmedical
- 566Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCCmedical
How is M20.019 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under M20.01, the nearest indexed parent of M20.019. Use them to find the family, then select the specific code.
- Deformity › finger › mallet finger
Excludes1 — never code together — inherited from M20
The conditions below can never be reported together with M20.019 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from M20.0
The conditions below can never be reported together with M20.019 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M20.019, but a patient may have both at the same time. When documentation supports it, M20.019 and the excluded code may both be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Excludes2 — not included here — inherited from M20-M25
The conditions below are not part of M20.019, but a patient may have both at the same time. When documentation supports it, M20.019 and the excluded code may both be reported.
- joints of the spine (M40-M54)
How long has M20.019 existed?
M20.019 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.